The Quran

يَومَ نَدعو كُلَّ أُناسٍ بِإِمامِهِم ۖ فَمَن أوتِيَ كِتابَهُ بِيَمينِهِ فَأُولٰئِكَ يَقرَءونَ كِتابَهُم وَلا يُظلَمونَ فَتيلًا

Muhammad Asad

[but] one Day We shall summon all human beings [and judge them] according to the conscious disposition which governed their deeds [in life]:¹ whereupon they whose record shall be placed in their right hand² - it is they who will read their record [with happiness]. Yet none shall be wronged by as much as a hair's breadth:³

Thus Razi interprets the phrase nad'u kulla unasin bi-imamihim (lit., "We shall summon all human beings by [mentioning] their leaders" or "guides"). In his opinion, the expression imdm (lit., "leader" or "guide") has in this context an abstract connotation, signifying the conscious disposition, good or bad, which governs a person's behaviour and provides the motives for his deeds. This interpretation is most convincing, and particularly so in view of the fundamental hadith quoted in my note 32 on 53:39.
A symbolic image, often used in the Qur'an, denoting an acknowledgement of righteousness in the spiritual sense, just as the "left hand" indicates its opposite (cf. 69:19 and 25, as well as 84:7)
This last clause obviously applies to both the righteous and the unrighteous. (For my above rendering of fatil, see surah 4, note 67.)